Title: The Evolution and Adoption of the Rainbow Flag in San FranciscoMedium: article in a vexillological sourceMain author(s): James FerriganLanguage:EnglishSource title: [icv88]Source number (date): (1989)Source pages: 116-122Remarks: Book section. Flag Bulletin.

Title: Flags of the municipal units of the city of PragueMedium: article in a vexillological sourceMain author(s): Pavel FojtíkLanguage:EnglishSource title: [vxk]Source number (date): sp. Iss. (2000)Source pages: 24-27Remarks: special issue "Flags over Czech towns"